Adesso Browser Cat 2-button USB Touch Pad ATP-400UB
If using a laptop-style touchpad is easier for you than a mouse, then add this 2-button USB touchpad to your desktop computer. Glide your finger over its surface to point, click and drag. Configure the horizontal and vertical edges to act as bi-directional scroll wheels. The touchpad can also be useful in situations where desk area is limited.
Requires Microsoft Windows 98SE+. Some features require Microsoft Windows 2000+.